HVAC Control in the New Millennium.pdf - HVAC.Amickracing

Artificial Intelligence, Fuzzy Logic and ControlFigure 6-3. Expert system structuretroubleshooting a computer system is also known as a diagnostic decisionlogic table (DDLT).Robotic systems are using expert systems to decide which robot isbest for performing a particular task and to help troubleshoot brokenrobots. Expert systems are also used to schedule factory production andmaintenance.An expert system can have four parts:• inference engine,• knowledge base,• database and• natural language interface.The inference engine acts as a rule interpreter which matches factsand rule conditions. It is the controller of the system. The knowledgebase contains the rules while the database collects the facts given to thesystem by the user. These facts are used by the inference engine in decidingwhat rules to apply to the problem. The natural language interfaceallows the user to communicate with the expert system in a naturallanguage such as English or French.©2001 by The Fairmont Press, Inc. All rights reserved.